Breaking: #87511 - Remove $viewFormatToObjectNameMap property

See forge#87511

Description

Property $viewFormatToObjectNameMap of class \TYPO3\CMS\Extbase\Mvc\Controller\ActionController has been removed without replacement.

Impact

Overriding the property $viewFormatToObjectNameMap in controllers that extend ActionController will no longer trigger the instantiation of another view object, derived from the mapping.

Affected Installations

All extensions that override the property $viewFormatToObjectNameMap.

Migration

If an action needs a template object other than the default \TYPO3\CMS\Fluid\View\TemplateView, the property $defaultViewObjectName needs to be overridden.